Mercurial > libervia-backend
view libervia/backend/memory/migration/env.py @ 4095:684ba556a617
core (memory/sqla_mapping): fix legacy pickled values:
folloing packages refactoring, legacy pickled values could not be unpickled (due to use of
old classes). This temporary workaround fix it, but the right thing to do will be to move
from pickle to JSON at some point.
author | Goffi <goffi@goffi.org> |
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date | Mon, 12 Jun 2023 14:57:27 +0200 (20 months ago) |
parents | 4b842c1fb686 |
children | 0d7bb4df2343 |
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import asyncio from logging.config import fileConfig from sqlalchemy import pool from sqlalchemy.ext.asyncio import create_async_engine from alembic import context from libervia.backend.memory import sqla_config from libervia.backend.memory.sqla_mapping import Base # this is the Alembic Config object, which provides # access to the values within the .ini file in use. config = context.config # Interpret the config file for Python logging. # This line sets up loggers basically. fileConfig(config.config_file_name) # add your model's MetaData object here # for 'autogenerate' support # from myapp import mymodel # target_metadata = mymodel.Base.metadata target_metadata = Base.metadata # other values from the config, defined by the needs of env.py, # can be acquired: # my_important_option = config.get_main_option("my_important_option") # ... etc. def run_migrations_offline(): """Run migrations in 'offline' mode. This configures the context with just a URL and not an Engine, though an Engine is acceptable here as well. By skipping the Engine creation we don't even need a DBAPI to be available. Calls to context.execute() here emit the given string to the script output. """ db_config = sqla_config.get_db_config() context.configure( url=db_config["url"], target_metadata=target_metadata, literal_binds=True, dialect_opts={"paramstyle": "named"}, ) with context.begin_transaction(): context.run_migrations() def include_name(name, type_, parent_names): if type_ == "table": if name.startswith("pubsub_items_fts"): return False return True def do_run_migrations(connection): context.configure( connection=connection, target_metadata=target_metadata, render_as_batch=True, include_name=include_name ) with context.begin_transaction(): context.run_migrations() async def run_migrations_online(): """Run migrations in 'online' mode. In this scenario we need to create an Engine and associate a connection with the context. """ db_config = sqla_config.get_db_config() engine = create_async_engine( db_config["url"], poolclass=pool.NullPool, future=True, ) async with engine.connect() as connection: await connection.run_sync(do_run_migrations) if context.is_offline_mode(): run_migrations_offline() else: asyncio.run(run_migrations_online())